3D-modeling

With the transition from analog to digital methods in dental prosthetics manufacturing, 3D modeling has become a key factor in the operation of our dental laboratory. Every product manufactured using an SLA or SLS 3D printer or a milling machine requires prior 3D modeling.

A particularly important area of 3D modeling in our laboratory is the planning and design of surgical templates for implantation.

We accept intraoral scans, dental impressions, and gypsum models. The processing time depends on the type of model provided. For 3D modeling, the model must be digitized. An intraoral scan does not require digitization, as it is already a digital 3D model.

A gypsum model and a dental impression, unlike an intraoral scan, require digitization. The impression must first be cast in gypsum. For 3D scanning of models, we use the 3Shape E3 scanner.

  • 3Shape E3

    A high-precision scanner for dental laboratories designed for scanning models and impressions. It delivers high speed and detail with 4 cameras and 5 MP resolution. The 3Shape E3 is the perfect choice for creating accurate digital replicas and optimizing workflow.

    3Shape E3

For 3D modeling of dental reconstructions, the 3Shape Dental System or exocad DentalCAD software can be used. 3Shape is slightly more popular in our region due to its fully developed digital ecosystem, which enables seamless data transfer between work stages.

Modeled objects are represented in CAD software as closed surfaces, meaning they are hollow during the modeling stage. These programs include a wide range of predefined presets as well as intelligent algorithms for modeling artificial teeth based on the shape of preserved natural teeth. This allows for the automation of the most technically complex stage of modeling, leaving the dental technician only to verify and fine-tune the model. This approach significantly speeds up prosthetics production and ensures maximum precision.

If a specific function is missing, the software supports the installation of plugins. There are numerous plugins available, including those with information about materials and technologies from various dental prosthetics manufacturers.

Thanks to plugins and built-in capabilities, 3D modeling software is aware of the operational details of most equipment models (milling machines, 3D printers) that will manufacture the designed model. This allows the software to prepare the file correctly and optimize the production process.

Nevertheless, the device producing the model still applies its own built-in programs for production preparation. For a 3D printer, this is a layer slicer; for a milling machine, it is a program for calculating the milling path and axial movements.

For implant planning and surgical template design, specialized programs such as 3Shape Implant Studio and exocad exoplan are used. Unlike general-purpose CAD software that imports 3D surface scans and represents objects by their contours, implant planning software imports CT scans of the patient’s jaw. A CT scan is a complete 3D scan, containing not only boundaries but also internal structures such as bone, soft tissues, and canals.

Due to this different approach, Implant Studio and exoplan allow working with 2D cross-sections of the 3D model. Cross-sections are crucial for positioning implants accurately during surgical template design, as they provide the only method for precisely aligning implant placements.